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A NEW (MICROSCOPICALLY ASSISTED) TECHNIQUE FOR POSTERIOR LUMBAR INTERBODY FUSION USING POSTERIOR SPINAL ELEMENTS AS BONE GRAFT.



Abstract

Objective: To demonstrate the safety, surgical efficacy and advantages of the Posterior Lumbar Interbody Fusion (PLIF) technique using posterior elements as graft material when combined with pedicle screw fixation.

Design: Retrospective study assessing the Oswestry Score and Pain Intensity Score pre and post-operatively in patients undergoing disc excision and PLIF with the above technique.

Subjects: Eighteen patients (6 male), mean age 44 years (range 24 – 59) with a mean follow-up of 11 months (range 9 – 14). Four subjects had undergone previous lumbar surgery. All subjects had a history of back pain with or without sciatica.

Outcome measures: Pre and post-operative assessment of functional ability and pain using the Oswestry Score and Pain Intensity Score.

Results: Following surgery there was marked improvement in the Oswestry Score from a mean score of 36 (+/−12) to 19 (+/−9), P< 0.0001. Likewise there was an improvement in the Pain Intensity Score from a pre-operative mean score of 4 (+/−1) to a post-operative score of 1 (+/−1), P< 0.0001. Seventeen of the eighteen patients indicated that they would have the operation again.

Conclusion: Our technique is safe, effective and the results are comparable with published data. This technique provides the added benefit of utilisation of posterior elements of the spine as bone graft and hence avoids donor site problems and the risks associated with insertion of block grafts.

Abstracts prepared by Mr. A. J. Stirling, FRCS, and Miss A. Weaver. Correspondence should be addressed to Miss A. Weaver at the Research and Teaching Centre, Royal Orthopaedic Hospital, Northfield, Birmingham, B31 2AP, UK

BritSpine 2002, the second combined meeting of the British Association of Spinal Surgeons, the British Cervical Spine Society, The British Scoliosis Society and the Society for Back Pain Research, took place at the International Convention Centre in Birmingham UK between 27th February and 1st March 2002. The following presentations and posters were given and displayed.